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Finding the Fourth Proportional to 28,794.51, 43,173.30 and 12,150

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Solution

The fourth proportional to 28,794.51, 43,173.30 and 12,150 is: 18,217.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,794.51 : 43,173.30 = 12,150 : x
  2. Step 2: Convert to fraction form
    28,794.51/43,173.30 = 12,150/x
  3. Step 3: Cross multiply
    28,794.51x = 43,173.30 × 12,150
  4. Step 4: Simplify right side
    28,794.51x = 524,555,595.00
  5. Step 5: Solve for x
    x = 524,555,595.00/28,794.51
  6. Step 6: Final answer
    x = 18,217.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.